diff --git a/client/src/components/WeatherBalloon.vue b/client/src/components/WeatherBalloon.vue
index 51df045..2f7d412 100644
--- a/client/src/components/WeatherBalloon.vue
+++ b/client/src/components/WeatherBalloon.vue
@@ -95,7 +95,7 @@ const speedVal = computed(() => {
 })
 
 const climbVal = computed(() => {
-	if (latest.value?.vertical_speed == null) return null
+	if (latest.value?.climb == null) return null
 
 	const v = vertical.value.convert(Number(latest.value.vertical_speed))
 	return v >= 0 ? `+${v}` : String(v)
diff --git a/client/src/services/sondes.ts b/client/src/services/sondes.ts
index 081ec12..1903243 100644
--- a/client/src/services/sondes.ts
+++ b/client/src/services/sondes.ts
@@ -12,7 +12,7 @@ import SondePopup from '@/components/WeatherBalloon.vue';
 import {bringToFront} from './zindex';
 
 const API = BASE + '/api';
-const SONDE_STALE_TTL = 60_000;
+const SONDE_STALE_TTL = 60_000 * 5;
 
 interface SondeReading {
 	timestamp: number;